preliminary metal renderer

This commit is contained in:
2024-08-05 15:44:51 +10:00
parent ca8d4f3a2b
commit d896f2eaa7
3 changed files with 239 additions and 2 deletions

View File

@ -1,37 +1,65 @@
import Foundation
import SDL3
import QuartzCore.CAMetalLayer
public class Application {
private let cfg: ApplicationConfiguration
private var window: OpaquePointer? = nil
private var view: SDL_MetalView? = nil
private var renderer: Renderer? = nil
private var lastCounter: UInt64 = 0
private var stderr = FileHandle.standardError
public init(configuration: ApplicationConfiguration) {
self.cfg = configuration
}
private func initialize() -> ApplicationExecutionState {
guard SDL_Init(SDL_INIT_VIDEO) >= 0 else {
print("SDL_Init() error: \(String(cString: SDL_GetError()))")
print("SDL_Init() error: \(String(cString: SDL_GetError()))", to: &stderr)
return .exitFailure
}
// Create SDL window
var windowFlags = SDL_WindowFlags(SDL_WINDOW_HIGH_PIXEL_DENSITY)
if (cfg.flags.contains(.resizable)) {
windowFlags |= SDL_WindowFlags(SDL_WINDOW_RESIZABLE)
}
window = SDL_CreateWindow(cfg.title, cfg.width, cfg.height, windowFlags)
guard window != nil else {
print("SDL_CreateWindow() error: \(String(cString: SDL_GetError()))")
print("SDL_CreateWindow() error: \(String(cString: SDL_GetError()))", to: &stderr)
return .exitFailure
}
// Create Metal renderer
view = SDL_Metal_CreateView(window)
do {
let layer = unsafeBitCast(SDL_Metal_GetLayer(view), to: CAMetalLayer.self)
self.renderer = try Renderer(layer: layer)
} catch RendererError.initFailure(let message) {
print("Renderer init error: \(message)", to: &stderr)
return .exitFailure
} catch {
print("Renderer init error: unexpected error", to: &stderr)
}
// Get window metrics
var backBufferWidth: Int32 = 0, backBufferHeight: Int32 = 0
guard SDL_GetWindowSizeInPixels(window, &backBufferWidth, &backBufferHeight) >= 0 else {
print("SDL_GetWindowSizeInPixels() error: \(String(cString: SDL_GetError()))", to: &stderr)
return .exitFailure
}
renderer!.resize(size: SIMD2<Int>(Int(backBufferWidth), Int(backBufferHeight)))
lastCounter = SDL_GetPerformanceCounter()
return .running
}
private func deinitialize() {
renderer = nil
SDL_Metal_DestroyView(view)
SDL_DestroyWindow(window)
SDL_Quit()
}
@ -50,12 +78,24 @@ public class Application {
}
return .running
case SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED:
let backBufferSize = SIMD2(Int(event.window.data1), Int(event.window.data2))
renderer!.resize(size: backBufferSize)
return .running
default:
return .running
}
}
private func update(_ deltaTime: Double) -> ApplicationExecutionState {
do {
try renderer!.paint()
} catch RendererError.drawFailure(let message) {
print("Renderer draw error: \(message)", to: &stderr)
} catch {
print("Renderer draw error: unexpected error", to: &stderr)
}
return .running
}
@ -122,3 +162,9 @@ fileprivate enum ApplicationExecutionState {
case exitSuccess
case running
}
extension FileHandle: TextOutputStream {
public func write(_ string: String) {
self.write(Data(string.utf8))
}
}